Change value from index number

If loclv is equal to index number , how can I keep the value in Data with index from loclv and change in other to 0 (Change only in column 2

clear
Data   = readmatrix('Pure Brain Spectra.csv');

rows=length(Data)
cols=width(Data)

%for i = 2:cols
%hold on
Xlocs = Data(:,1);
Ylocs = Data(:,3);
select = [Xlocs Ylocs]
plot(Data(:,1),Data(:,3)); 
%for j=1:rows
value = findpeaks(Ylocs,Xlocs); 
[pks,locsLiv] = findpeaks(Data(:,2)); 
%end
%hold off
%end

)

Answer 1

[Nagasai Bharat]

Hi,

From my understanding you are trying to replace values in second column in Data with "pks" at locsLiv as index and have rest indices to have a zero.

Adding the following lines of code should do the task

Data(:,2) = 0; % After line [pks,locsLiv] = findpeaks(Data(:,2));
Data(locsLiv,2) = pks ;